CMS 2011A Simulation | Pythia 6 QCD 1400-1800 | pT > 375 GeV | MOD HDF5 Format
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Simulated QCD jets from the Simulated QCD 1400-1800 Dataset of the CMS 2011 Open Data reprocessed into the MOD HDF5 format. Jets are provided at generator (truth) level in the GEN files and after GEANT4 detector simulation in the SIM files (which also contain associated GEN jets to facilitate studies involving both types of jets). Jets are selected from the hardest two anti-kT R=0.5 jets in events passing the Jet300 High Level Trigger (only relevant for SIM) and are required to have \(p_T^\text{jet}>375\) GeV, where \(p_T^\text{jet}\) includes a jet energy correction factor (again, only relevant for SIM). GEN jets contain truth-level particles with kinematic and PDG ID information, and SIM jets contain Particle Flow Candidates (PFCs) with kinematic, PDG ID, and vertex information. Additionally, jets have metadata describing their kinematics and provenance in the original CMS AOD files. For additional details about the dataset, please see the accompanying paper, Exploring the Space of Jets with CMS Open Data. There, jets were further restricted to have \(|\eta^\text{jet}|<1.9\) to ensure tracking coverage and (in the case of SIM) have "medium" quality to reject fake jets. The supported method for downloading, reading, and using this dataset is through the EnergyFlow Python package, which has additional documentation about how to read and use this and related datasets. Should any problems be encountered, please submit an issue on GitHub. For reference, the other corresponding datasets of simulated jets available on Zenodo are: SIM/GEN QCD Jets 170-300 GeV SIM/GEN QCD Jets 300-470 GeV SIM/GEN QCD Jets 470-600 GeV SIM/GEN QCD Jets 600-800 GeV SIM/GEN QCD Jets 800-1000 GeV SIM/GEN QCD Jets 1000-1400 GeV SIM/GEN QCD Jets 1400-1800 GeV SIM/GEN QCD Jets 1800-\(\infty\) GeV There is an associated dataset of jets recorded by the CMS detector available on Zenodo: CMS 2011A Jets, pT > 375 GeV
本数据集为经重新处理为MOD HDF5格式的紧凑型缪子线圈（Compact Muon Solenoid, CMS）2011年开放数据（CMS 2011 Open Data）中的模拟量子色动力学（Quantum Chromodynamics, QCD）喷注数据集Simulated QCD 1400-1800 Dataset。 生成器（GEN）文件中提供生成器级（真值级）的喷注，模拟（SIM）文件中则包含经过GEANT4探测器模拟后的喷注（SIM文件同时附带关联的GEN级喷注，以方便开展两类喷注的相关研究）。 喷注选自通过Jet300高级别触发（仅对SIM文件有效）的事件中前两例硬散射anti-kT R=0.5喷注，且需满足喷注横向动量(p_T^ ext{jet}>375) GeV，其中(p_T^ ext{jet})已包含喷注能量校正因子（同样仅对SIM文件有效）。 GEN级喷注包含带有运动学信息与粒子数据组标识（Particle Data Group ID, PDG ID）信息的真值级粒子；SIM级喷注则包含带有运动学、PDG ID以及顶点信息的粒子流候选体（Particle Flow Candidates, PFCs）。此外，所有喷注均附带元数据，记录其运动学信息与原始CMS分析对象数据（Analysis Object Data, AOD）文件中的溯源信息。 关于该数据集的更多详情，请参阅配套学术论文《Exploring the Space of Jets with CMS Open Data》。在该论文中，喷注被进一步限制满足(|eta^ ext{jet}|<1.9)以确保覆盖径迹探测范围，且（针对SIM级喷注）要求具备"中等"质量标签以剔除伪喷注。 本数据集的下载、读取与使用推荐通过EnergyFlow Python工具包实现，该工具包提供了关于该数据集及相关数据集的读取与使用的详细文档。若遇到任何问题，请在GitHub平台提交议题。 以下为Zenodo平台上可用的其他对应模拟喷注数据集： SIM/GEN QCD喷注170-300 GeV SIM/GEN QCD喷注300-470 GeV SIM/GEN QCD喷注470-600 GeV SIM/GEN QCD喷注600-800 GeV SIM/GEN QCD喷注800-1000 GeV SIM/GEN QCD喷注1000-1400 GeV SIM/GEN QCD喷注1400-1800 GeV SIM/GEN QCD喷注1800-(infty) GeV Zenodo平台上同时提供由CMS探测器记录的关联喷注数据集：CMS 2011A喷注，(p_T > 375) GeV
